Abrading – Machine – Rotary tool
Reexamination Certificate
2006-11-14
2006-11-14
Nguyen, Dung Van (Department: 3723)
Abrading
Machine
Rotary tool
C451S028000, C451S398000
Reexamination Certificate
active
07134948
ABSTRACT:
A retaining ring having a bottom portion that is removable from the ring's upper portion is described. The upper and lower portions of the retaining ring include one or more magnetic bodies and/or one or more bodies formed of a material that is attracted to magnets.
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Tseng Ming-Kuei
Wadensweiler Ralph M.
Applied Materials Inc.
Fish & Richardson
Nguyen Dung Van
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